Coke-oven.



C. SCHROETER.

COKE OVEN.

APPLICATION FILED BEPT.B,1903.

Patented May 18, 1909.

5 SHEETS-SHEET 1.

G. SGHROETER.

COKE OVEN.

APPLICATION FILED srmna. 190a.

Patented May 18, 1909.

5 8KBETS-EHBBT 2.

(L SOHRGETER.

COKE OVEN.

APPLIUATEGN FILED SEPT, 8, 1903,

Patented May 18, 1909.

5 SHEETS-SHEET 3.

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A. r NW av U G. SGHROBTER.

00KB OVEN.

APPLIGATION FILED SEPT. 8. 1903.

Patented May 18, 1909.

6 SHEETS-SHEET 5.

fisss s as sa QQSEBAUEQ a s s saag \WQ: QEQEEEBERW UNITED s'rArrps rnrENT orrron.

CARL BCHROETER, 0F UHIUAUO, ILLINOIS, ASSIGNOR 0F ONE-THIRD TU JA MES CHICAGO, ILLINOIS.

COKE-OVEN Specification of Letters Patent.

Patented May 1 8, 1909.

Application filed September 8, 1908. Serial No. 172,298.

To all whom it may concern:

Be it known that I, CARL Sonnon'rnn, a citizen. of the United States, residing at Chi.- cago, in theeounty of (look and State of Ill nois, have invented certain new and useful Improvements in Coke-Ovens, of which the folow ng is a s .ecifiqation.

My invention re ates to. improvements in coke ovens. of that general type wherein the oven comprises within a single external housing or casing a bank or series of similarly arra ed and equipped retorts adapted to treat inde endent uantities of coal supplied thereto, t e severa retorts being adapted to effect the coking action solely through the ap ication of external heat.

lhe invention relates more particularly to improvements u n the apparatus set forth in my prior app ication Serial No. 153,596, filed April 20, 1903.

Among the salient objects of the present invention are to simplify and improve the arrangement of the burners and combustionchambers within which the latter discharge;

. to dispense with the regenerators employed 'in my former apparatus for utilizing the heat from the out oing gases ofcombustion and in lieu thereo to arrange the transverse outlet lines which lead to the chimney within the main body ofthe masonr foundation; to provide auxiliary fuel-supp y pipes leading to and dischar ing within'the checkerwork spaces at eac 1 end of each retort; to provide an improved arrangement or disposition of the down-take flues which lead her the combustion spaces surrounding the re torts whereby I am enabled to secure a more uniform circulation or distribution of the gases of combustion; to dispense with the open spaces or air chambersmtervening between the several retorts and the fuel pipes and burners extending within said spaces and discharging into the sides of the checker work and substitute in lieu thereof the fuel pipes and burners discharging into the checker work at the ends of the retorts; to

rovide below the main combustion chainliers air chambers from which supplies. of air are admitted to the combustion chamber, and to provide in conjunction'with said air chamber means for, insuring a more perfect mixing of the air and fuel gases; to so arrange the air supply 0 enings with relation to the nozzle ends of the burner protect the latter I .burning off; and

pipes asv to in general, to provide improvements in the details of construction and arrangement of the apparatus as will hereinafter more fully ap car.

ike invention consists in the matters hereinafter described and more particularly bank of retorts is a duplicate of the front end, the retorts extending entirely through the oven and being provided with similar closures at both ends; Fig. 2 is a vertical sectional view taken transversely of the retorts, the several retorts from left to right being shown on the lines a-b,' cd,ej

and gh, respectively, of Fig. 3; Fig. 3 is a longitudinal vertical section throughone of the retorts and its underlyin supports taken on the line i--k of Fig. 5; big. 4 is a longitudinal vertical section through one of the checker-work side walls of a retort, taken on the line l-m of Fig. 5: Fig. 5 is a-horizontal sectional view through three adjacent retorts, the upper retort being shown as cut on the line no, the intermediate retort as out on the line q and the lowermost retort as cut on the ine rs, all of Fig. 3. Figs. 6 and 7 are detailed views showing the arrangement of the fuel suppl pipes.

Referrim to the drawings, 11 designates housing or casing resting upon a series of arches 12 and vertical supports 13 and in closin a series of relatively long, narrow re tort c ambers 14. The several retorts of the oven are duplicates of each other in construction, and a description of one will suffice for all.

The side walls of the retorts, instead of being formed as usual of solid masonry, are made with interior open work formation, each wall consisting of an inner lining 15, an outer shell 16 and an intermediate open or checkerwork 17; this construction being best shown in Figs. 2 and 4. The top lining of the wall of the retort is formed by a series of transversel extending fire c ay arch ieces 18,. whilh the bottom wall or. sole is ormed; by one or more removable fire-clay air blast.

longitudinally disposed pipes 28 in the air chambers, passes u iwardly through the burner tubes and disc iarges within the combustion chambers, in which latter the combustion initiates. The burnin gases low from the combustion chambers l aterally o tward through the arch openings 32 to tie checker spaces 17 rising througlrthe latter to the to of the furnace and passing over the to s 0 the retorts, and thence to the downta e flues 34. From the down-take fines the gases pass to the transverse, flues 35 and thence to the chimney. several soles of the retorts form the tops of the combustion chambers. it will be seen that the retorts are com letely enveloped by theburning gases, and y reason of the distribution of the burners and-the eduction ilues the gases are thoroughl dispersed and the circulation maintains quite uniform around each of the several retorts. Accordingly the coking 0 eration is both thorough and uniform. y reason of the fact that the burner tubes 29 extend through openings in the protecting plates 25 of larger diameter than the exterior diameter of the burner tubes, and discharge in the combustion chamber a slight distance above said protecting lates,

the relatively cool air contained in t e an chamber 27 1S entrained or drawn upwardly through said apertures 26 around the several burner tubes, thereby thoroughly protecting the latter and preventing them from being burned off by the intense heat of the combustion chamber. This is a'feature of mu ch importance, and entrained forms an auxiliary su ply of oxygen in addition to that introduced y the internal The horizontal partition formed by the plates 25 obviously protects the piping contained in the air chamber, and it will be further noted that .the construction and arrangement of the plates are such that the latter may be readily lifted out, thus permitting the gas tubes to be withdrawn from the several air chambers with great facility. The fact that the gas pipes within the air chambers are made in two sets extending inwardly from each and further contributes to the ready removal of the pipes, for the purposes of inspection and repair.

It will be understood that the details of construction may be somewhat modified without departing from the spirit of the invention, and accordingly I do not limit myself to the exact details shown and described exce t to, the extent that they are made the su ject of specific claims.

I claim as my invention:

1. In a coking oven, a coking retort provided in its lower portion with a su porting wall or sole, a second wall mounted i said sole and the bottom of said retort and forming a combustion chamber thereabove and an air chamber 'therebelow, said second Inasmuch as the furthermore, the air thus the latter, a partition intermediate etween wallbeing provided with a series of apertures, a series of burner tubes mounted within said air chamber and projecting through said apertures into said combustion chamber, said tubes being smaller than said apertures and mounted concentrically therein, whereby air from said air chamber is entrained into said combustion chamber around the ends of said tubes by the action of the fuel flowing therefrom, and means for supplying fuel to said burner tubes, substantially as and for the purpose described.

2. A coking oven, comprising a coking retort composed of double walls providin a cheekerwork combustion space there etween, a combustion chamber beneath the coking retort and communicating with said combustion s ace, the floor wall of, said combustion chain er being apertured, a series of burner tubes supported beneath said floor wall and rojectmg into said combustion chamber tfirough said apertures, said apertures being largerthan said tubes whereby air is entrained through said a ertures around the ends of said tubes witliin said combustion chamber, and means for an plying fuel to said burner tubes, substantia ly as and for the purpose described.

3. In a cokin oven of the character de scribed, the com ination of a bank of coking retorts arranged parallel and contiguous with each other, a combustion chamber extending longitudinally beneath each retort throughout the length thereof, an air chamber extending longitudinally beneath each combustion chamber throughout the length of wall separating said combustion and air chambers from each other and provided with-burner tube aper-' tures, a header fuel pipe extending across each end of the oven opposite the ends of the several retorts, a rou of branch pipes extending from each ea er pipe longitudinally within the respective air chambers to points the len ths thereof, burner tubes connected with the several. iipes of the several groups, extending upwardly through said partition wall and discharging within the combustion chambers, header air pi es extendin alon each end of the oven a jacent to t is fue pipes, branch injector pipes connected with said header air pipes and ex-- tending and discharging within the several combustion chamber pipes, riser ipes connected with the header fuel pipes at each on of the oven and rising adjacent to the end walls thereof, branch burner pipes connected with said risers and extending through the end walls of the oven anddischarging into the spaces at each side of each retort, riser air pipes connected with said header air pipes at each end of the ovenand provided with branch extensions extending and discharging within the burner tubes of the riser fuel pipes, and means for supplying gasa d air tn the respective header pipes, substantially as described.

4. In a coking oven of the general character described, the combination with a bank of coking retorts arranged side by side and a; masonry foundation support comprising a series of transversely extending arches, of intercommunicatin combustion spaces below, at each side 0 and above each ret rt,

10 down-take flues communicating with the upper combustion spaces of each retort and extending downwardly alongside of the respective retorts, and one or more transversely di posed main lines formed within the ma,- sonry foundation between the chambers of adjacent arches, with which transversely disposed flu es said down-take fines communioate, substantially as described.

CARL SCHROETER.

Witnesses: I

ALBERT H. GRAVES, A 'Fnnnmmox C. Goonwm. 

